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November 20, 2019 Service bulletin

Owner's Letter for emissions recall FL821 for Western Star 4900 exhaust pipes emitting excess pollutants

Western Star technical service bulletin OLFL821-Emission for 2016-2019 Western Star 4900.

Bulletin number
OLFL821-Emission
Component
Engine and engine cooling
Summary
Owner's Letter for emissions recall FL821 for Western Star 4900 exhaust pipes emitting excess pollutants. Pipe support brackets lacks durability and may cause pipe to crack at bellows and weld breaks to occur at the flange.

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